Re: [PATCH 0/2] mm: avoid redundant reads of the vm_refcnt cacheline in anonymous faults

[Lorenzo Stoakes (ARM)]

On Tue, Nov 10, 2026 at 02:34:31PM +0000, Seunghyun An wrote:
> Thanks for taking this on.
>
> I should have disclosed the LLM involvement up front, and I'm sorry
> I didn't. I came across this while researching the performance of the
> anonymous fault path and worked with Claude to investigate and quantify
> it. Claude also drafted the code and changelogs.
>
> My main aim was to report the findings to the community. In hindsight,
> a plain report would have been a better way to raise it. I wanted to share
> the measured effects, especially on EPYC given the higher cross-CCD
> coherency penalty, and offer a possible way to address them.
>
> I'd be glad to collaborate on measurements for your series and any
> follow-up work in this area.

Thanks! I will cc- you on the patch, and if there is any remaining issue we can
chase that down.

And of course credit you on the patch as reporter! :)

--
Cheers, Lorenzo